Antifouling paint and varnish.



SEARCH ROQM UNITED STATES PATENT OFFICE.

MORITZ ULRICH, OF ELBERFELD, GERMANY, ASSIGNOR 'lO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

ANTIFOULING PAINT AND VARNISH.

- To all whom it may concern:

Be it known that I, Monrrz ULRICH, doctor of philosophy, chemist, citizen of the German Empire, residing at Elberfeld, Germany, Kingdom of Prussia, have invented new and useful Improvements in Antifouling Paints and Varnishes, of which the following is a specification.

It is known that the alkali salts of dinitroortho-cresol (see British Letters Patent No. 3301 A. D. 1892) commercially called an tinonnin are used in aqueous solutions, sometimes with addition of soap, for destroying insects, fungi (polyporus destructor' etc), dry-rot, but as they are insoluble in organic solvents they cannot be used for preparing spirit or benzene varnishes, paints for bottoms of ships or for similar purposes, in which a preserving action is desirable. I have now found, that the free dinitro-orthocresol can be used for this purpose and preparations suitable as coatings, paints or varnishes cfan thus be obtained which are remarkable or their ood are lprp erties. The free dinitro-orth d gdi gp ifis soliI ble in alcohol, benzene, ligroinilinseed oil, tar-oil m solvents or agglutinants used Specification of Letters Patent.

Application filed August 4, 1908.

Patented Dec. 15, 1908.

Serial No. 446,939.

for the preparation of such coatings, paints or varnishes, and other suitable substances may be dissolved in these solutions without 2 causing precipitation of the -.dinitro-orthocresol.

A useful preparation can be obtained for instance by dissolving 1 part of dinitroortho-cresol in 25 parts of a spirit varnish but the quantities and the solvents may be varied without altering thereby the nature of the invention.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, I

' declare that what I claim is As a new article of manufacture a Varnish comprising dinitro-ortho-cresol in conjunction with suitable solventsfsTbstantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

OTTO KoNIe, WM. I VAsHmG'roN BRUNSWICK. 

